Driver drill bit



FIG. 1 is a perspective view of a driver drill bit according to the present design;

FIG. 2 is a top plan view of the driver drill bit of FIG. 1;

FIG. 3 is a front view of the driver drill bit of FIG. 1;

FIG. 4 is a left side view of the driver drill bit of FIG. 1;

FIG. 5 is a back view of the driver drill bit of FIG. 1;

FIG. 6 is a right side view of the driver drill bit of FIG. 1;

FIG. 7 is a perspective view of the driver drill bit of FIG. 1 in co-operation with a crown-bit,

FIG. 8 is a perspective view of the driver drill bit according to a variant of the present design;

FIG. 9 is a top plan view of the driver drill bit of FIG. 8;

FIG. 10 is a front view of the driver drill bit of FIG. 8;

FIG. 11 is a left side view of the driver drill bit of FIG. 8;

FIG. 12 is a back view of the driver drill bit of FIG. 8; and,

FIG. 13 is a right side view of the driver drill bit of Figure wherein the broken lines illustrate components that form no part of the design.

The broken lines in the figures are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a driver drill bit, as shown and described. 